Wrench.



M. C. BERSTED.

WRENCH.

APPLICATION FILED NOV. 17, 1913.

Patented Sept. 1, 1914.

jaz /Z6 5666.

THE NORRIS PETERS C0 PHOT0-LITHO., WASHINGTON. D. c.

- wen non.

.To all whom it mag concern. v j

a 1 Be it known that I, MARTIN flyBiinsrnn, acitizen of the UnitedStates, and a resi dent of Chicago,\in the county Of'GOOk and State ofIllinois, have invented certain new and useful Improvements in renches,of

which the following is a fulhclear, and exa'ctzspecification.

My. 'nvent1on is concerned with wrenches of the type in which thejawsare interchangeable, so that a plurality of jaws of different designsmay be used with asingle handle, and adjustable so that the jaws may Iassume a plurality-pf positions with reference to the handle, and is"designed to produce a wrench of the class describedwhich shall be simpleand compact in its construc- 'tion, and capable of being operatedquickly and efficiently in all positions where such wrenches .areemployed] To illustrate my. invention, 1 annex heretov a sheet ofdrawings, in whichxthe same reference charactersare used to designateidentical parts in all thefigures, of which, 1

Figure l is a side elevation of a wrench embodying my invention, [with aportion thereof broken-away;- Fig. 2 is a central longitudinal sectionon the line A tot Fig. 1 Fig. 31is a View in crosssection on the line BBof Fig. 1; Fig. jti's a cross section on the line C CQof Fig. 1 gan'dFigs.- 5, 6 and 7 are perspective views ofdifier'ent forms of jaws whichI- niayeinploy in connection with my invention. j

The handle of the wi'encli'is formed of two parts, the larger part athaving the thickened portion at the, inner end terminated bythe inclinedofi'set 7), while the somewhat enlarged circular outer end is providedwith a circular offset c, which'is' adapted-to serve as a bearing in themanner; to be described. The smaller portion-dot" the handle is pivotedat c to the main portion, and its inner end is cut off at an incline tocooperate with the oils'et Z) to stop the pivoted portion when it isswung into the full-line position shown in Fig. 1, to

secure the jaw in place. The shape of the outer end of the portion (Zcorresponds in general to the shape of the outer end of the portion a,and it is provided'with a circular recess 7 to permit. the manipulationof the plunger in a manner which will be subsequently described. Thehead of the main 7 Speeifieatioh ofLettrsPatent! fPatentedSept. 1,191.41. App icat o fi eamvember 12111913. Seam; 801,335

portion a ot, the handle has formed therein an aperture 91 whichis oiithe general shape ofan inverted ,Boredlinto the head is aJcyIindricalaperture h which intersects MARTIN o. lBERSTED, orciiicaeo, ittii iois.

the T-shaped aperturegg and extends, as

seen in Fig. 2, almostas .far as the size of the ofiset c will permit,Mounted; to slide inthis aperture h is the locking dog-.y',whichpreferably has the nose beveled on one side and square on the other, forI a purpose which will hereinafter described, and the nner portion ofthis dog 7' has cylin dr cal aperture /l; lbored therein to. accoincular flange m,.and outsidethisfis a reduced flange port on] a which hastwo flattened sides 0 which are adapted to coiiperate with the adjacentsides of the stem portion of.

the T-shaped aperture 9. The wrench jaws may, 5,' 6 an'd7, have:anydesired' shape, but all of them; are; provided with annular portions79 of substantially the same diameter as the as. shown in, Figs.

modate thehelically-coiled expanding spring Z inserted/in its apertureand coiiperating with the bottom of the recess h to .hold the dog,yieldingly in its engaging position. This dog y has rigidly securedthereon or formed integrally therewith a; milled cirhead of the; handle,and provided with a circular aperture, 9 which is of the ,properdiameter to fit snugly. over theoffset c. ,On the interior ofso much ofthis aperture as is practicable, I form, recesses '1", and it willbenoted that as the jaw is adjusted to dit ferent, positions, asindicated bythe dotted lines in Fig. l,-. the nose of thefdog j coop.erateswith the different recesses to lock the same inlposition. Bymaking one side of the nose of the dog 3' beveled, while the otherissquare, it is possible to ratchet the j'aw. of the wrench into differentpositions by simply swinging 'the handle. hen the jaw hasbeen'ratchetedentirely to one side, it can be thrown back to;the other side merely byseizing the milled flange m between the thumb and first finger andpulling it down to disengage the dog from the re- 3 cesses 1". Or, if itis desirable to lock the jaw from ratcheting in the direction it has ibeen moving, all that is necessary is'to withdraw the dog and turnitthrough and allow it to slip back into place under the tension of thespring 1, when it will be ready to be used as a solid w rench,jturning'in thesame direction as before; or it can then be ratchet'e'd back'inthe opposite direction. What I claim as new, and desire to secure byLetters Patent of the United States; isi 1. In a wrench, the combinationwith a two-part handle having a bearing lug prolatter in any -'ofthepositions in which it i is placed, substantially pose described.

2. In a wrench,'the'cdinbination oi -a twopart handle having a circularbearing-lug rigidly securedto and projecting from the 'outer'end of themain partfthe other part as and for the purb'eing adaptedto be swungover or away froin said lugas desired, of-a jaw having a circularaperture with recesses in the periphery-of "the aperture and adapted to"be 'IittedoVe'r' the lug in variouspositions when w the swingingportion'o'f thehandle is withdrawn, and asliding spring pressed plungermounted inthe lug and having a nose adapted to coiiperate with any ofthe above- I mentioned recesses.

3. In a wrench, the combination with a two-part handlehaving a circularbearinglug with a T-shaped recess therethrough rigidly secured to andprojecting "from the outerend of the 'main part, the other part beingadapted to be swungover or away froni'sa'id lug, as desired/eta jawhaving, 'a circular aperture'thereinwith recesses in the peripheryof'the aperture adapted to f be-fitted over the lug in "variouspositions w hen 'tlie's'winging portion of -'-the handle'iswithdrawnfand "a sliding spring-pressed plunger mounted in the lug,having" a "nose adapted to coeperate with any of the recesses, andhaving flattened surfaces 00- operating with the sides of the narrowerpart-of the T -shaped recess to prevent the plunger from turning.

1 Aislin a wrench, the combination with a two-parthandle having acircular bearlng- "lug with a T-shaped aperture therein projecting fromthe outer end of the main part,

,the v other part being adapted to be swung over or away from said lug,as desired, of a jawhaving a'circular aperture with recesses in theperiphery of the aperture adapted to be fitted over the l-ugin' variouspositions when the swinging portion of the handle is withdrawn, asliding spring-pressed plunger mounted in theflug, hollow at one end andhaving a nose the other end adapted to coepe'r'ate with the recesses inthe jaw, a cooperating aperture in the lug into which the hollow end ofthe plunger may =be reread, and a =he1ical1ycoi1ed expanding spring insaid hollow and aperture.

5; in a wrench, the COIfiblIIELtlOlI"Wii/l1 a twoart handle having acircular lbearing- -1ugwith an aperture therethrough rigidly secured :toand projecting; from theouter end of the main partfthe other part beingadapted to be swung over or away: from saidlug, as desired, "theswinging part having another aperture registering with the aperture inthe bearing lug when the [inn-- die is closed, of a jaw having :acircular aperture with recesses in the periphery of the "aperture"adapted to be "fitted over the lug in variouspositions"when'theswinging portion of the handle is withdrawn, and a slidingspring-pressed plunger mounted in the lug and having a nose adapted tocooperate with therecesses, and a fiangewhich can be inanlpulatedthrough the apertures in the swinging P01131011 of 1 the handle andthebearing' lug. 111' witness whereof, I have hereunto set any hand andaffixed illy seal, this 15th day of November, A. 1913.

MARTIN 'o. 'BERSTED' L. 8.]

. 'W'itnesses: i

JOHN. "LIOWARD MGELROY, MILDRED ELsNER.

Copies bf this bate'nt'inay'be obtained to r f ive cents feachfbyaddressingthe Gommission'er of -Iatents, I i

. Washington, D." 0/ i

